The socialite, who has seen her popularity soar since her appearance at the royal wedding on April 29, is allegedly single now.
The Sun writes that Pippa, 27, and city banker Alex, 30, separated long ago after a string of arguments.
An unnamed source told The Sun: “Pippa tried to get over the split by spending last weekend with Wills and Kate at Balmoral.”
“She and Alex split briefly in the summer but this time it’s over. They are barely speaking.”
Loudon is also said to have been unsupportive of the sudden attention given to his girlfriend, elevated overnight to the status of sex symbol.
A source told the tabloid: “It was said after the wedding that Alex was jealous of Pippa flirting with Prince Harry. But the truth is she and Harry are just mates.”
In recent months, rumors have circulated stating that Alex was preparing to pop the question.
Affected by the break, the brunette allegedly sought comfort with her sister at the Balmoral Castle.
In any case, Pippa’s new status as single will surely revive the rumors. Many people still dream of seeing her form a couple with Prince Harry.